package map;

import java.util.*;

public class MapDemo3 {
    public static void main(String[] args) {
        Map<String,Integer> map=new HashMap<>();
        map.put("语文",99);
        map.put("数学",100);
        map.put("英语",88);
        map.put("物理",96);
        map.put("化学",99);
        System.out.println(map);

        Set<String>keySet=map.keySet();
        for (String key:keySet){
            System.out.println("key:"+key);
        }
        Collection<Integer> values=map.values();
        for (Integer value:values){
            System.out.println("value:"+value);
        }
        Set<Map.Entry<String,Integer>>entrySet=map.entrySet();
        for (Map.Entry<String,Integer>e:entrySet){
            String key=e.getKey();
            Integer value=e.getValue();
            System.out.println("key:"+key+",value:"+value);
        }

    }
}
